Structure 5C0243 · Trinity County, CA

West Van Duzen RD over Van Duzen River

Carries West Van Duzen RD over Van Duzen River, 4.5 Mi N Of Zenia-ruth RD.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT265 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

265 ft end to end, longest span 133 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built201412 years old
Length265.1 ft80.8 m
Daily traffic200counted 2016
Last inspectedJune 2023every 24 months

Location

StateCalifornia
CountyTrinity
Location4.5 Mi N Of Zenia-ruth RD
CarriesWest Van Duzen RD
CrossesVan Duzen River
Coordinates40.34126, -123.47482

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length265.1 ft (80.8 m)
Max Span132.5 ft (40.4 m)
Deck Width31.2 ft (9.5 m)
Deck Area767.6 sq m
Main Spans2
Year Built2014

Traffic

Avg Daily Traffic200 (2016)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number05C0243

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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